Drain pump



FIG. 1 is a front elevational view of an exemplary embodiment of a drain pump showing the new design, a rear elevational view being symmetrical to the front elevational view;

FIG. 2 is a right side view of the drain pump of FIG. 1;

FIG. 3 is a left side view of the drain pump of FIG. 1;

FIG. 4 is a top view of the drain pump of FIG. 1;

FIG. 5 is a bottom view of the drain pump of FIG. 1; and,

FIG. 6 is a perspective view of the drain pump of FIG. 1.

Any broken lines in the figures are provided for illustrative purposes only, and form no part of the claimed design. 

The ornamental design for a drain pump, as shown and described. 